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118 lines
3.4 KiB
Diff
118 lines
3.4 KiB
Diff
Date: Fri, 25 Nov 2011 16:22:29 +0100
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From: S?bastien Bourdeauducq <sebastien@milkymist.org>
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To: "Milkymist One, Milkymist SoC and Flickernoise developers' list"
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<devel@lists.milkymist.org>
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Subject: [Milkymist-devel] RTEMS patch for video formats
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[-- Attachment #1 --]
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[-- Type: text/plain, Encoding: 7bit, Size: 0.5K --]
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Hi,
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The attached patch implements RTEMS driver support for different video
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formats.
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S-Video and Component are untested, because I do not have suitable
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sources. However, when using these modes, feeding the composite signal
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into the Y input gives a greyscale picture, so they likely work.
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I'm also sending a screenshot of the new video input settings dialog.
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When in composite mode, I'm planning to add keyboard shortcuts to
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switch between the 3 inputs live.
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S.
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Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_video/milkymist_video.h
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===================================================================
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--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_video/milkymist_video.h 2011-08-01 10:48:40.000000000 -0300
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+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_video/milkymist_video.h 2011-11-26 01:09:16.000000000 -0300
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@@ -8,7 +8,7 @@
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*
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* $Id: milkymist_video.h,v 1.1 2011/08/01 13:48:40 joel Exp $
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*
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- * COPYRIGHT (c) 2010 Sebastien Bourdeauducq
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+ * COPYRIGHT (c) 2010, 2011 Sebastien Bourdeauducq
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*/
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#ifndef __MILKYMIST_VIDEO_H_
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@@ -33,6 +33,16 @@
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#define VIDEO_SET_REGISTER 0x5609
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#define VIDEO_GET_REGISTER 0x560a
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+#define VIDEO_SET_FORMAT 0x560b
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+
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+enum {
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+ VIDEO_FORMAT_CVBS6 = 0,
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+ VIDEO_FORMAT_CVBS5,
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+ VIDEO_FORMAT_CVBS4,
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+ VIDEO_FORMAT_SVIDEO,
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+ VIDEO_FORMAT_COMPONENT,
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+};
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+
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rtems_device_driver video_initialize(
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rtems_device_major_number major,
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rtems_device_minor_number minor,
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Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_video/video.c
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===================================================================
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--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_video/video.c 2011-08-01 10:48:40.000000000 -0300
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+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_video/video.c 2011-11-26 01:09:16.000000000 -0300
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@@ -267,6 +267,37 @@
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);
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}
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+static void set_format(int format)
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+{
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+ switch(format) {
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+ case VIDEO_FORMAT_CVBS6:
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+ write_reg(0x00, 0x00);
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+ write_reg(0xc3, 0x05);
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+ write_reg(0xc4, 0x80);
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+ break;
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+ case VIDEO_FORMAT_CVBS5:
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+ write_reg(0x00, 0x00);
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+ write_reg(0xc3, 0x0d);
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+ write_reg(0xc4, 0x80);
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+ break;
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+ case VIDEO_FORMAT_CVBS4:
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+ write_reg(0x00, 0x00);
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+ write_reg(0xc3, 0x04);
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+ write_reg(0xc4, 0x80);
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+ break;
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+ case VIDEO_FORMAT_SVIDEO:
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+ write_reg(0x00, 0x06);
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+ write_reg(0xc3, 0xd5);
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+ write_reg(0xc4, 0x80);
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+ break;
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+ case VIDEO_FORMAT_COMPONENT:
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+ write_reg(0x00, 0x09);
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+ write_reg(0xc3, 0x45);
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+ write_reg(0xc4, 0x8d);
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+ break;
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+ }
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+}
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+
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rtems_device_driver video_control(
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rtems_device_major_number major,
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rtems_device_minor_number minor,
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@@ -333,7 +364,7 @@
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break;
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case VIDEO_SET_REGISTER:
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- write_reg(((unsigned int )a & 0xffff0000) >> 16,
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+ write_reg(((unsigned int)a & 0xffff0000) >> 16,
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(unsigned int)a & 0x0000ffff);
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sc = RTEMS_SUCCESSFUL;
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break;
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@@ -342,6 +373,11 @@
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sc = RTEMS_SUCCESSFUL;
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break;
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+ case VIDEO_SET_FORMAT:
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+ set_format((int)a);
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+ sc = RTEMS_SUCCESSFUL;
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+ break;
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+
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default:
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sc = RTEMS_UNSATISFIED;
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break;
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